Spectral flow of a localized mode in elastic media
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Spectral flow of a localized mode in elastic media
Auteur(s) :
Miniaci, Marco [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
JUNIA [JUNIA]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allein, Florian [Auteur]
JUNIA [JUNIA]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pal, R [Auteur]
University of Kansas [Kansas City]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
JUNIA [JUNIA]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allein, Florian [Auteur]
JUNIA [JUNIA]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pal, R [Auteur]
University of Kansas [Kansas City]
Titre de la revue :
Physical Review Applied
Pagination :
064018
Éditeur :
American Physical Society
Date de publication :
2023-12-11
ISSN :
2331-7019
Discipline(s) HAL :
Physique [physics]
Sciences de l'ingénieur [physics]
Sciences de l'ingénieur [physics]
Résumé en anglais : [en]
The introduction of structural defects in otherwise periodic media is well known to grant space control and localization of waves in several fields of physics, from electromagnetism to acoustics and elasticity. Despite the ...
Lire la suite >The introduction of structural defects in otherwise periodic media is well known to grant space control and localization of waves in several fields of physics, from electromagnetism to acoustics and elasticity. Despite the variety of designs proposed so far to achieve mode localization, most of the approaches derive from contextual modifications that do not translate into a design paradigm due to the lack of a general theory. Few exceptions include designs endowed with topological dispersion bands, which, however, require changes over substantial portions of the structure. To overcome these limitations, here we introduce a rationale inspired by fractional electronic charges, to achieve topologically protected localized modes in continuous elastic media. We theoretically predict and experimentally observe the spectral flow of a localized mode across a bulk frequency gap by modulating a single structural parameter at any chosen location of architectured elastic media. The simplicity and generality of this approach may open avenues in designing elastic-wave-based devices for energy localization and harvesting.Lire moins >
Lire la suite >The introduction of structural defects in otherwise periodic media is well known to grant space control and localization of waves in several fields of physics, from electromagnetism to acoustics and elasticity. Despite the variety of designs proposed so far to achieve mode localization, most of the approaches derive from contextual modifications that do not translate into a design paradigm due to the lack of a general theory. Few exceptions include designs endowed with topological dispersion bands, which, however, require changes over substantial portions of the structure. To overcome these limitations, here we introduce a rationale inspired by fractional electronic charges, to achieve topologically protected localized modes in continuous elastic media. We theoretically predict and experimentally observe the spectral flow of a localized mode across a bulk frequency gap by modulating a single structural parameter at any chosen location of architectured elastic media. The simplicity and generality of this approach may open avenues in designing elastic-wave-based devices for energy localization and harvesting.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Projet Européen :
Source :
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